Mesa Unicorn

The lifelink keyword needed a clean common to carry it into the next generation of sets, and a vanilla body with one evergreen ability is exactly the chassis for that job. Two power for two mana with lifelink is the rate the color identity of white aggro has always wanted at common: a creature that trades into the red deck's burn while paying you back, that races a 2/2 and wins the life total, that turns every combat step into a small reservoir against the clock. There is nothing here beyond the keyword and the body, which is the point. Cards like this exist to teach a mechanic and to fill the curve, not to headline a deck. The unicorn type and the white-weenie shape make it a frictionless inclusion wherever a beginner is learning that lifelink is a stabilizer rather than a finisher, and the absence of any second ability keeps it honest as a teaching tool: the only decision it asks is when to attack and when to hold back as a blocker that still gains you life. A baseline against which fancier lifelink commons get measured, and a reminder that the keyword does most of its work on the smallest, cheapest creatures rather than the bombs.